kkk/* ================= RESET ================= */
* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #0b4f2c, #073d22);
  color: #fff;
}

.hidden {
  display: none;
}

/* ================= DESKTOP ================= */
.desktop-ui {
  display: block;
}

.top-bar {
  background: #b11217;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: bold;
  font-size: 18px;
}

.admin-btn {
  background: white;
  color: #b11217;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: bold;
}

main {
  padding: 20px;
}

input, select, button {
  padding: 10px;
  width: 100%;
  max-width: 320px;
  margin-bottom: 10px;
  border-radius: 8px;
  border: none;
}

button {
  background: #00c853;
  color: white;
  font-size: 16px;
  font-weight: bold;
}

.tile {
  background: rgba(0,0,0,.35);
  padding: 14px;
  border-radius: 12px;
  margin-bottom: 10px;
  cursor: pointer;
}

.tile.disabled {
  opacity: .4;
  pointer-events: none;
}

footer {
  text-align: center;
  opacity: .6;
  padding: 20px;
}

/* ================= MOBILE ================= */
.mobile-ui {
  display: none;
}

/* ☰ Menu */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  font-size: 24px;
  background: rgba(0,0,0,.5);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
}

/* ===== MOBILE CARD ===== */
.mobile-card {
  background: rgba(0, 0, 0, 0.45);
  padding: 32px 24px;
  border-radius: 28px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 24px 50px rgba(0,0,0,.6);
}

.mobile-card h1 {
  font-size: 34px;
  margin-bottom: 8px;
}

.mobile-card p {
  font-size: 18px;
  margin-bottom: 20px;
  opacity: .85;
}

.mobile-card input {
  width: 100%;
  padding: 18px;
  margin-bottom: 14px;
  border-radius: 14px;
  font-size: 18px;
  border: none;
}

.mobile-card button {
  width: 100%;
  padding: 18px;
  font-size: 22px;
  background: #00c853;
  border: none;
  border-radius: 14px;
  color: white;
  font-weight: bold;
}

/* ===== MOBILE BREAKPOINT ===== */
@media (max-width: 768px) {
  .desktop-ui {
    display: none;
  }

  .mobile-ui {
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    padding: 20px;
  }

  .mobile-menu-btn {
    display: block;
  }
}